Super Micro Computer shares closed at $26.99 on 12 November, down 11.3% from $30.43, on the day Semafor and Bloomberg reported Justice Department inquiries involving the server maker. With 659.2 million shares outstanding, the fall equals about $2.27 billion of market value, by our arithmetic.
Semafor reported at 16:12 UTC, citing two administration officials, that two Justice Department inquiries focus on Megaspeed and Supermicro, alongside an antitrust probe of Nvidia. Bloomberg reported at 16:57 UTC that the US attorney’s office in Manhattan is examining whether entities linked to the same individual were involved in efforts to smuggle Super Micro products to China, according to a person familiar with the matter.
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A short explainer on concentration: when a few big pieces make the total. It teaches the general idea only and does not discuss Super Micro.
The key insight: As we read the 10-Q and the two reports, the inquiries reported on 12 November concern a company whose own filing already disclosed a Manhattan grand jury subpoena on its compliance program, and whose Asia sales have fallen to 5.5% of the total from 46.2% a year earlier.
Semafor said the Megaspeed and Supermicro probes “have focused on the involvement of” one individual, whom Bloomberg also named. We do not name the individual here. Semafor also wrote: “There’s no indication that the DOJ would seek to charge Nvidia”.
Bloomberg described the Manhattan inquiry as “previously unreported scrutiny” and said “It’s unclear whether the probe” is tied to any of the chip smuggling cases already brought by prosecutors in the US or Asia. Our earlier piece on what is known about Megaspeed has the background on that company.
Super Micro net sales by region as a share of the total, quarter to 30 September 2025 vs 2026. Source: Super Micro Form 10-Q filed 6 November 2026.
What Super Micro Said
A Supermicro spokesperson told Semafor that “Megaspeed is not, and has never been, a Supermicro customer”, and that the company “has fully cooperated with US and Taiwanese officials, while also voluntarily providing information and engaging with all requests from Singapore authorities to date”.
The spokesperson added: “Supermicro maintains a robust compliance program and continues to work closely with authorities and industry partners to combat diversion and help protect American innovation”. Spokespeople for Nvidia and the Justice Department did not provide a comment to Semafor.
Singapore’s Ministry of Home Affairs said earlier on 12 November that Supermicro had given limited cooperation to its Megaspeed investigation, as covered in our Singapore piece. Super Micro’s statement to Semafor answers that point.
What the 10-Q Already Disclosed
Super Micro’s Form 10-Q, filed on 6 November, says that after the March indictment of three individuals “The Company also received a grand jury subpoena from the U.S. Attorney’s Office for the Southern District of New York” seeking documents on the individuals and facts in the indictment, “as well as the Company’s compliance program and internal controls, and related issues”.
The filing says “The Company is cooperating and continues to produce responsive documents in response to the subpoena”. The Southern District of New York is the Manhattan office Bloomberg named. One contractor in the March case has since pleaded guilty, and Taiwan separately indicted nine people over servers with Nvidia B300 chips.
Asia Fell to 5.5% of Sales
The same 10-Q shows Asia at $1,088 million, or 5.5% of net sales, in the quarter to 30 September 2026, against $2,318 million, or 46.2%, a year earlier. Asia sales fell 53%, by our arithmetic, while total net sales rose to $19,946 million from $5,018 million.
The United States went to 80.1% of sales from 36.6%. A year earlier Malaysia and Indonesia were each above 10% of sales; in the latest quarter no country other than the United States was, the filing says. One customer accounted for 44.0% of net sales. Our results piece covers the quarter’s profit and cash.
SMCI daily closes, 13 October to 12 November 2026. Data: Yahoo Finance; market value lost is our arithmetic from 659.2 million shares in the 10-Q.
How the Shares Traded
Super Micro had risen 9.5% on 11 November, by our arithmetic from Nasdaq closes. On 12 November it opened at $27.19 and stood at $28.97 at 16:11 UTC, 4.8% below the prior close, in Yahoo Finance one-minute data.
In the minute after 16:23 UTC, 1.76 million shares traded and the price dropped to $27.99. By 16:40 UTC it was $26.41, 8.8% below the 16:11 UTC level, by our arithmetic. The day’s low was $25.705, 15.5% under the prior close.
Volume reached 114.2 million shares, 2.7 times the 42.9 million traded on 11 November. In after-hours trading the shares were at $27.25 at 22:21 UTC, 1.0% above the close, per Yahoo Finance.
The Structural Read
As we read the reports, they describe inquiries sourced to unnamed officials and a person familiar with the matter; neither says any charge has been brought against Super Micro.
As we read the trading data, Super Micro was already 4.8% lower at 16:11 UTC, and fell a further 8.8% by 16:40 UTC, after Semafor published at 16:12 UTC, by our arithmetic.
Supermicro spokesperson, as told to Semafor, 12 November 2026
“Megaspeed is not, and has never been, a Supermicro customer”
Three Implications
FOR THE MARKET VALUE About $2.27 billion of value was lost on the day, by our arithmetic from 659.2 million shares.
FOR THE SALES MIX The United States was 80.1% of net sales in the latest quarter, and Asia 5.5%, per the 10-Q.
FOR OUR COVERAGE We will report any court filing, Justice Department statement or Super Micro disclosure on these inquiries.
The framework says: “This isn’t just a supply chain problem. It’s a fundamental constraint on the speed of AI transformation, and it’s creating geopolitical leverage that operates independently of who has the best models.”
Super Micro’s 10-Q shows its Asia sales down to 5.5% of the total. The framework predates these reports and discusses minerals and processing, not servers or Super Micro.
What Is Not Established
Both reports describe inquiries, not charges, and rest on unnamed officials and a person familiar with the matter. Super Micro was not named as a defendant in the March indictment, which charged three individuals, per its 10-Q. We read only the opening of the Bloomberg article, which is behind a paywall.
Neither report says what products were involved, when, or in what amounts. Separate reporting on a DeepSeek investment tied to the Megaspeed case has not been linked to Super Micro. We did not contact Super Micro; its words above are as given to Semafor.
This Week In The AI Supercycle
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
Super Micro lost about $2.27 billion of market value on 12 November as two outlets reported Justice Department inquiries involving it, which the company answered by saying Megaspeed was never a customer. Its own 10-Q already disclosed a Manhattan grand jury subpoena on its compliance program, and Asia has fallen to 5.5% of its sales from 46.2% a year earlier.
A note on sourcing. The inquiries are as reported by Semafor (two administration officials) and Bloomberg (a person familiar with the matter); the Justice Department did not comment to Semafor. Super Micro’s words are its statement to Semafor. Filing figures come from its 10-Q filed 6 November 2026; prices from Nasdaq and Yahoo Finance. Market value, percentage moves and ratios are our arithmetic. We do not name private individuals.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
